题目内容
流体流动的质量守恒定律可用于计算( )
2021-10-14
A.瓣口体积
B.瓣口内径
C.瓣口面积
D.瓣口流速
E.瓣口流速时间积分
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25627' and id < 2155721 and id<>'2155721' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25627' and id > 2155721 and id<>'2155721' order by id asc limit 5